Results 31 to 40 of about 634 (193)

Acceleration of Suprathermal protons near an Interplanetary Shock

Astronomy & Astrophysics, 2023
Context. Interplanetary collisionless shocks are known to be sources of energetic charged particles up to hundreds of MeV. However, the underlying acceleration mechanisms are still under debate.Aims. We determine the properties of suprathermal protons accelerated by the interplanetary shock on 2021 November 3 with the unprecedented ...
Liu Yang, Verena Heidrich-Meisner, Lars Berger, Robert Wimmer-Schweingruber, Linghua Wang, Jiansen He, Xingyu Zhu, Die Duan, Alexander Kollhoff, Daniel Pacheco, Patrick Kühl, Zigong Xu, Duncan Keilbach, Javier Rodríguez-Pacheco, George Ho   +14 more
openaire   +1 more source

Plasmaspheric High‐Frequency Whistlers as a Candidate Cause of Shock Aurora at Earth

Geophysical Research Letters, 2023
Auroral brightening driven by interplanetary shocks on Earth's closed magnetic field lines is commonly attributed to the 0.1–10 keV electron precipitations by electron cyclotron harmonic waves and whistler‐mode chorus waves in the low‐density region.
Nigang Liu, Zhenpeng Su, Yuyue Jin, Zhaoguo He, Jiang Yu, Kun Li, Zuzheng Chen, Jun Cui   +7 more
doaj   +1 more source

Origin and formation of a chondritic xenolith in Krymka (LL3.2, breccia): Indications for a late formation of the accretionary breccia

Meteoritics &Planetary Science, EarlyView.
Abstract An unusual chondritic xenolith was found in two sequentially prepared thin sections of a sample from the Krymka (LL3.2) chondrite. The xenolith has a rounded, slightly deformed shape of about 5 mm in apparent diameter and is partially surrounded by a double rim made of an inner fine‐grained silicate‐rich rim and an outer sulfide‐rich rim.
Aelita Girich, Addi Bischoff, Samuel Ebert, Kazuhide Nagashima, Andreas Morlok, Harald Hiesinger, Jasper Berndt   +6 more
wiley   +1 more source

On the role of interplanetary shocks in accelerating MeV electrons

Astronomy & Astrophysics, 2023
Context. One of the sources of solar energetic particle (SEP) events is shocks that are driven by fast coronal mass ejections (CMEs). They can accelerate SEPs up to relativistic energies and are attributed to the largest SEP events. New studies suggest that CME-driven shocks can potentially accelerate electrons to MeV energies in the vicinity of the ...
N. Talebpour Sheshvan, N. Dresing, R. Vainio, A. Afanasiev, D. E. Morosan   +4 more
openaire   +3 more sources

Characterization of the Transmission and Generation of Turbulence at Interplanetary Shocks

The Astrophysical Journal
We study the transmission and characteristics of turbulent magnetohydrodynamic (MHD) fluctuations from upstream to downstream regions of interplanetary (IP) shocks using the linear mode decomposition (LMD) technique of G. P. Zank et al.
Sujan Prasad Gautam, Gary P Zank, Alexander Pitňa, Laxman Adhikari, Lingling Zhao, Ashok Silwal, Prashant Baruwal, Prashrit Baruwal, Monika Karki, Ismita Tasnim, Binod Adhikari   +10 more
doaj   +1 more source

Editorial to the Special Issue “Propagation of Coronal Mass Ejections”

Universe, 2023
Coronal mass ejections (CMEs) and their associated shocks are one of the main drivers of heliosphere variability, causing both interplanetary and planetary perturbations [...]
Mateja Dumbović, Fang Shen
doaj   +1 more source

Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight

Experimental Physiology, EarlyView.
Abstract Crewed interplanetary return missions that are on the planning horizon will take years, more than enough time for initiation and completion of a pregnancy. Pregnancy is viewed as a sequence of processes – fertilization, blastocyst formation, implantation, gastrulation, placentation, organogenesis, gross morphogenesis, birth and neonatal ...
Arun V. Holden
wiley   +1 more source

Evolution of Turbulence at an Interplanetary Shock Observed by the Solar Orbiter and Wind Spacecraft

The Astrophysical Journal
This work presents a case study of the evolution of turbulence in the vicinity of an interplanetary shock observed by Solar Orbiter (SolO) at 0.83 au and Wind at 1 au on 2023 November 30.
Sujan Prasad Gautam, Gary P. Zank, Alexander Pitňa, Bingbing Wang   +3 more
doaj   +1 more source

Generation and evolution of interplanetary slow shocks [PDF]

Annales Geophysicae, 1996
It is well known that most MHD shocks observed within 1 AU are MHD fast shocks. Only a very limited number of MHD slow shocks are observed within 1 AU.
C.-C. Wu, S. T. Wu, M. Dryer
doaj   +1 more source

On the Formation of Super-Alfvénic Flows Downstream of Collisionless Shocks

The Astrophysical Journal
Super-Alfvénic jets, with kinetic energy densities significantly exceeding that of the solar wind, are commonly generated downstream of Earth's bow shock under both high- and low-beta plasma conditions. In this study, we present theoretical evidence that
Adnane Osmane, Savvas Raptis
doaj   +1 more source